It is emphasized that aeration, sludge retention time and external carbon addition have been identified as effective control methods.
在控制策略方面，强调了曝气、污泥停留时间和外碳源补加等有效的控制手段。
It could be available to control the concentration of nitrogen and phosphorus and the hydraulic retention time for algae bloom preventing.
控制氮磷浓度和水力停留时间是预防水华发生的有效措施。
Melamine peaks meeting the retention time and ion ratio criteria must be compared to the positive tissue control.
即使三聚氰胺的保留时间和离子比符合检出标准也必须和阳性对照样品进行比较。
Melamine peaks meeting the retention time and ion ratio criteria must be compared to the positive tissue control.
即使三聚氰胺的保留时间和离子比符合检出标准也必须和阳性对照样品进行比较。
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